Khalaf al-Aḥmar

…Wālibah ibn al-Ḥubāb, later under Khalaf al-Aḥmar. He also studied the Qurʾān (Islāmic sacred scripture), Ḥadīth (traditions relating to the life and utterances of the Prophet), and grammar and is said to have spent a year with the Bedouins in the desert to acquire their traditional purity of language.

…down poems, Ḥammād ar-Rāwiyah and Khalaf al-Aḥmar, are thought to have dealt freely with their originals and have even been called clever forgers. It is thus necessary to consider carefully the evidence for authenticity of any verse attributed to a particular pre-Islāmic poet.